Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Revenues	$ 132,932	$ 94,132	$ 261,960	$ 173,908
Operating Expenses
Employment expenses	54,868	42,992	115,564	82,633
Distribution and other asset-based expenses	23,721	15,764	46,012	31,087
Other operating expenses	19,128	20,236	35,990	33,462
Restructuring and severance	0	8,894	0	8,894
Depreciation and other amortization	1,100	776	2,115	1,440
Amortization expense	5,024	1,813	10,060	2,046
Total operating expenses	105,624	90,948	212,035	160,677
Operating Income (Loss)	27,308	3,184	49,925	13,231
Other Income (Expense)
Other income (expense), net	455	47	1,774	693
Total other income (expense), net	(364)	(90)	3,652	5,297
Interest Income (Expense)
Total interest income (expense), net	5,750	(1,186)	9,467	1,558
Income (Loss) Before Income Taxes	32,694	1,908	63,044	20,086
Income tax expense (benefit)	9,465	1,880	15,988	6,313
Net Income (Loss)	23,229	28	47,056	13,773
Noncontrolling interests	(159)	(333)	(686)	(1,051)
Net Income (Loss) Attributable to Stockholders	23,070	(305)	46,370	12,722
Preferred stockholder dividends	(2,084)	(2,084)	(4,168)	(4,168)
Net Income (Loss) Attributable to Common Stockholders	$ 20,986	$ (2,389)	$ 42,202	$ 8,554
Earnings (Loss) per share—Basic (in $ per share)	$ 2.91	$ (0.34)	$ 5.86	$ 1.26
Earnings (Loss) per Share—Diluted (in $ per share)	2.75	(0.34)	5.52	1.22
Cash Dividends Declared per Preferred Share (in $ per share)	1.81	1.81	3.63	3.63
Cash Dividends Declared per Common Share (in $ per share)	$ 0.45	$ 0.45	$ 0.90	$ 0.90
Weighted Average Shares Outstanding—Basic (in shares)	7,211	7,064	7,204	6,804
Weighted Average Shares Outstanding—Diluted (in shares)	8,401	7,064	8,396	7,020
Consolidated investment products
Operating Expenses
Total operating expenses	$ 1,783	$ 473	$ 2,294	$ 1,115
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	(1,779)	(1,424)	480	3,020
Interest Income (Expense)
Interest expense	(15,278)	(2,995)	(29,827)	(5,852)
Interest and dividend income	23,679	5,102	45,082	10,758
Consolidated entity excluding consolidated investment products
Other Income (Expense)
Realized and unrealized gain (loss) on investments, net	960	1,287	1,398	1,584
Interest Income (Expense)
Interest expense	(4,469)	(3,739)	(8,327)	(3,982)
Interest and dividend income	1,818	446	2,539	634
Investment management fees
Revenues
Revenues	103,168	74,062	203,644	133,333
Distribution and service fees
Revenues
Revenues	13,549	10,439	26,156	21,222
Administration and shareholder service fees
Revenues
Revenues	15,967	9,476	31,705	18,457
Other income and fees
Revenues
Revenues	$ 248	$ 155	$ 455	$ 896